Pick out from the following complex compounds, a poor electrolyti… - Vidyadip

MCQ

Pick out from the following complex compounds, a poor electrolytic conductor in solution

A
${K_2}\left[ {PtC{l_6}} \right]$
✓
$\left[ {Co{{\left( {N{H_3}} \right)}_3}{{(N{O_2})}_3}} \right]$
C
${K_4}\left[ {Fe{{\left( {CN} \right)}_6}} \right]$
D
$\left[ {Cu{{\left( {N{H_3}} \right)}_4}} \right]S{O_4}$

✓

Answer

Correct option: B.

$\left[ {Co{{\left( {N{H_3}} \right)}_3}{{(N{O_2})}_3}} \right]$

b
$\left[ Co \left( NH _{3}\right)_{3}\left( NO _{2}\right)_{3}\right]$ There is no ions out of the coordination sphere thus it is poor conductor in electrolytic solution $K_{2}\left[P t C l_{6}\right]=3 i o n s$

$\left[ Co \left( NH _{3}\right)_{3}\left( NO _{2}\right)_{3}\right]=$ out of the coordination sphere no ions (non ionisable) $K_{4}\left[F e(C N)_{6}\right]=5$ ions

$\left[ Co \left( NH _{3}\right)_{4}\right] . SO _{4}=2$ ions

More ions $\propto$ more conductivity

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